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PATON
®
PSI STANDARD SERIES DC MIG/MAG TIG/MMA
Preparation the welding unit for operation in MMA:
1.
Insert the plug of the electrode cable into socket
A (+)
of the welding unit.
2.
Insert the plug of the grounding cable into socket
B (-)
of the welding unit.
3.
Connect the grounding cable to the workpiece.
4.
Connect the power cable of the welding unit to the outlet of the power supply system.
5.
Set switch
(14)
on the rear panel of the welding unit to position 1 (switching on);
6.
Switch the button
(4)
to the
MMA
welding position, if the desired welding method has been skipped,
press the button
(4)
again - the methods are switched over and over again;
7.
Holding the button
(3)
for about 5 seconds, we gain access to the locked functions of the welder;
8.
Using the buttons
(1)
set the current basic parameter - welding current or parameter of the selected
function;
9.
The device is ready for use.
Enjoy Your work.
If required, perform the additional functions specified for the manual arc welding process (see Section 6.1).
ATTENTION!
In the manual arc welding process, after switching on the
welding unit by switch
(14)
, the welding electrode is under voltage. Do not allow
the electrode to contact current-conducting or grounded parts, such as the casing
of the welding unit, because such a contact will cause the start of welding.
3.2. OPERATIONAL CYCLE OF THE MANUAL ARC WELDING
PROCESS
The procedure for changing the values of the operational parameters of the welding unit is described in Section
6.1.
3.3. INCREASED – CURRENT ARC STARTING “HOT – START”
The advantages ensured by the increased-current arc starting function are the following:
1.
Improved arc starting even when low-quality electrodes are used
2.
Better joint penetration during arc starting period and, as a result, the lower number of defects
associated with incomplete joint penetration.
3.
Prevention of slag inclusions
Manual adjustment operations
: allow the minimum arc starting current to be set in order to decrease
power consumption at the stage of arc starting. As a result, the welding arc can be started at the minimum
power supply voltage, but in this case, the arc quality characteristics at the stage of arc starting are
deteriorated (the welding unit functions as an arc-welding transformer, nevertheless, in some conditions,
this method of arc starting is the only possible one). The welding current may be increased in order to
I (A
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t (s)
Summary of Contents for PSI 160 Standard
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